1155300225505 has 4 divisors (see below), whose sum is σ = 1386360270612. Its totient is φ = 924240180400.

The previous prime is 1155300225451. The next prime is 1155300225517. The reversal of 1155300225505 is 5055220035511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 632673886464 + 522626339041 = 795408^2 + 722929^2 .

It is not a de Polignac number, because 1155300225505 - 2²¹ = 1155298128353 is a prime.

It is a super-2 number, since 2×1155300225505² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115530022546 + ... + 115530022555.

It is an arithmetic number, because the mean of its divisors is an integer number (346590067653).

Almost surely, 2^{1155300225505} is an apocalyptic number.

It is an amenable number.

1155300225505 is a deficient number, since it is larger than the sum of its proper divisors (231060045107).

1155300225505 is an equidigital number, since it uses as much as digits as its factorization.

1155300225505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231060045106.

The product of its (nonzero) digits is 37500, while the sum is 34.

The spelling of 1155300225505 in words is "one trillion, one hundred fifty-five billion, three hundred million, two hundred twenty-five thousand, five hundred five".